266 MORPHOLOGY AND EVOLUTION the tubes form a gentle curve, and their diameter remains almost constant from end to end. Their orifices are patent, but it is difficult or impossible to pass a fine FIG. 48.—The internal organs of generation in the Chimpanzee from the front (A) and from behind (B). B.L., broad ligament; C.U., cervix uteri; F.y fimbriae ; H.M., hydatid of Morgagni; M.U., meatus urinarius ; 0., O.A., O.F., O.L., O.Yn., ovury \vith its artery, fimbria,ligaments and vein; R.L., round ligament; V., vagina; Y.C., vaginal columns. The arrows in A represent the true positions of the Fallopian tubes. bristle through them. The fimbriae form a dense cluster and the ovarian fimbria is well marked on each side. The relations of the tubes to the ovaries are as in Man.